forked from OSchip/llvm-project
32 lines
630 B
LLVM
32 lines
630 B
LLVM
; RUN: llc < %s -march=thumb -mattr=+thumb2,+t2xtpk | FileCheck %s
|
|
|
|
define i32 @test0(i8 %A) {
|
|
; CHECK: test0
|
|
; CHECK: sxtb r0, r0
|
|
%B = sext i8 %A to i32
|
|
ret i32 %B
|
|
}
|
|
|
|
define i8 @test1(i32 %A) signext {
|
|
; CHECK: test1
|
|
; CHECK: sxtb.w r0, r0, ror #8
|
|
%B = lshr i32 %A, 8
|
|
%C = shl i32 %A, 24
|
|
%D = or i32 %B, %C
|
|
%E = trunc i32 %D to i8
|
|
ret i8 %E
|
|
}
|
|
|
|
define i32 @test2(i32 %A, i32 %X) signext {
|
|
; CHECK: test2
|
|
; CHECK: lsrs r0, r0, #8
|
|
; CHECK: sxtab r0, r1, r0
|
|
%B = lshr i32 %A, 8
|
|
%C = shl i32 %A, 24
|
|
%D = or i32 %B, %C
|
|
%E = trunc i32 %D to i8
|
|
%F = sext i8 %E to i32
|
|
%G = add i32 %F, %X
|
|
ret i32 %G
|
|
}
|